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A mathematical analysis of dressed photon in ground state of generalized quantum Rabi model using pair theory

2017; Institute of Physics; Volume: 50; Issue: 18 Linguagem: Inglês

10.1088/1751-8121/aa677c

1751-8121

Masao Hirokawa, Jacob Schach Møller, Itaru Sasaki,

Cold Atom Physics and Bose-Einstein Condensates

We consider the generalized quantum Rabi model with the so-called $A^{2}$-term in the light of the Hepp-Lieb-Preparata quantum phase transition. We investigate the dressed photon in its ground state when the atom-light coupling strength is in the deep-strong coupling regime. We show how the dressed photon appears in the ground state. We dedicate this paper to Pavel Exner and Herbert Spohn on the occasion of their 70th birthdays, and Klaus Hepp on the occasion of his 80th birthday.